Window bench or scaffold



July 14, 1931. STONE v 1,814,231

WINDOW BENCH OR SCAFFOLD Filed March 14, 1929 INVENTOR Mop/21s SrQA/E BY 5% MM ATTORNEY Patented July 14, 1931 UNITED STATES MORRIS STONE, or BROOKLYN, NEW YORK WINDOW BENCH OTR. SCAFFOLD Application filed March 14, i529. Serial No. 346,950.

My invention relates to improvements in window benches or scaffolds for use by window cleaners and has for its object to provide a window seat of this character which may be used with perfect safety and which due to several novel structural embodiments affords the person, using the same, considerably more comfort than may be enjoyed by other devices designed for the purpose.

A still further object of the invention is to provide a scaffold of the type which is collapsible and easily portable when not in use.

I accomplish these objects by means of the apparatus hereinafter described, set forth in the claim, and illustratively exemplified in the accompanying drawings, in which, Figure 1 is a perspective view of my improved window scaffold as it would appear in use;

Figure 2 is an end elevational view of the same; and Figure 3 is the same end view with the parts collapsed.

Referring to the drawings, 10 denotes the flat seat and 11 the back rest which is connected to the seat by means of hinges 12.

The ends of the seat 10 adjacent the free sideare provided with angle brackets 13, the up right arm of each being provided with a pivot 14 upon which an arm 15 is mounted at one of its ends, the opposite end having a sliding pivot 16. The pivot 16 projects through the slot 17 in one arm of an angle bar 18 and pivotally connects to the end of a second arm 19, the latter being directed toward the upper endof the end portion of the back rest 11 where it is mounted at its end on a pivot 20 in the rest 11. It will be noted in connection with this particular part of the construction that the two arms 15 and 19 form substantially a parallelogram with the seat 10 and back rest providing two of the sides.

Referring now to the angle bar 18, the latter is disposed so that the slotted arm forms a continuation of the arm 19 in open position of the scaffold, the other arm of the bar 18 projecting diagonally from the pivot slide 16 to pivot on a pin 21 projecting from the lower edge of the end of the back rest 11. To fold the scaflold the back rest 11 is swung about the hinge connections 12 to a position over the seat 10, as illustratively exempli fied'in Figure The movement of the back rest 11 projectsthe arms 19 and causes them,

with the ends of arms'15, to follow the slots 17, each of which: describes an are as the an glebar'18moves toward the seat 10 at opposite ends. The arms 15 and 19 at their pivoted ends carry the slide pivots 16 to the outer ends of the slot 17 The seatlO is further provided at opposite ends with bars 22, each of which comprises a straight portion projecting parallel with the end and on the under side of the seat 10 to which it is fastened. Beyond the free side of the seat the bar turns upright and then horizontal again to a point substantially beyond the seat where .it again turns upright and then horizontally again to provide an ear portion 23 accommodating a large opening or eye 24. A similar opening or eye 25 is provided in each of the free ends of the angle bars 18 beyond the ends of the slots 17 The eyes 24: and 25 are intended to receive chains 26 therethrough, each chain having a hook 27 at each end which may be engaged in suitably disposed eyes on the frame of the window. The bars 22 are traced by a tie rod 28 which is riveted at oppositeends directly to the bars 22 just inside the upright portion leading to the second step.

The compact arrangement of the parts when the scaffold is closed, Figure 3, makes the device easy to carry as well as easy to store when not in use. i

Having described my invention, what I claim and desire to secure by Letters Patent 1s;

In a window cleaners bench, a rectangular seat and a rectangular back rest hinged together along their adjacent longer sides, pairs of pivotally connected arm-s, one arm of each pair beingpivoted on one end of the seat and the other arm of each pair being pivoted to one end of the back rest, each pair of arms forming with. the seatand back rest a parallelogram, an angle bar for each end of the bench, one end of the bar being pivoted to the end of the back rest adjacent the hinged connection thereof, the said bar projecting diagonally of. the parallelogram and being pivotally connected at its angle on the pivoted connection of the arms, the free end of the bar beyond said pivot being provided with a slot to accommodate the latter and having an 5 eye at its extreme end, a rod for each end of the bench having a horizontal portion upon which one end of the seat is superimposed, an upright portion against which the front side of the seat abuts, a second horizontal portion, 10 adapted to overlie the sill of a window, a

second upright portion, and a third horizontal portion having a twisted end provided at its free extremity with an eye, chains con-i nected to the eyes and having hooks at the '5 ends thereof adapted to engage eyes on the window frame, and a tie rod having its ends attached to the first named rods at the portions thereof which overlie the sill.

In testimony whereof he has aflixed his 20 signature.

MORRIS STONE. I 

